View source for Urgenson et al 2009 giant knotweed implications

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|Authors Document=Urgenson et al
|Year Document=2009
|Title Document=giant knotweed 
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|AnthroTopic=
|EcoTopic=Biology; Vegetation
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'''Urgenson, L.S., Reichard, S.H. and Halpern, C.B., 2009. Community and ecosystem consequences of giant knotweed (Polygonum sachalinense) invasion into riparian forests of western Washington, USA. Biological Conservation, 142(7), pp.1536-1541.'''

*https://www.sciencedirect.com/science/article/pii/S0006320709000998

==Notes==
*Knotweed excludes native ground vegetation
*Nitrogen recovery from stems to roots at the end of the growing season is extremely efficient (70%) compared to 5-33% in native vegetation. 
*Knotweed litter has a higher C:N ratio of 50:1 compared to 30-40:1 among native trees, while fresh leaves have a high C:N ratio (~13:1)